VARIABLE CAPACITY TURBINE

摘要

There is provided a variable capacity turbine (1) that is capable of suppressing separation from an outer peripheral face of an involute dividing wall at an inlet portion of an outer scroll, enhancing performance, and increasing a flow rate. The variable capacity turbine (1) includes: a turbine housing (3) having an involuted scroll (2) formed therein; a turbine wheel (4) rotatably provided on an inner periphery side of the scroll (2); the involute dividing wall (7) mounted on the turbine housing (3) to divide the scroll (2) into an inner scroll (5) and the outer scroll (6); and a flow regulating valve (12) for opening and closing an introducing port (14) formed at an inlet end of the outer scroll (6). The inlet portion of the outer scroll (6) is formed to have a continuous and gentle throttle flow path from an upstream side to a downstream side.